01 -
Prepare pasta according to package instructions until al dente, reserving 120 milliliters of pasta water before draining.
02 -
Heat olive oil in a large skillet over medium heat. Add sliced leeks and sauté for 6 to 8 minutes, stirring occasionally until soft and golden.
03 -
Add sliced cremini mushrooms to the skillet and cook for 5 to 7 minutes until tender and lightly browned.
04 -
Incorporate minced garlic and sauté for 1 minute until fragrant.
05 -
Pour in white cooking broth, scraping up browned bits from the skillet bottom, and let simmer for 2 minutes.
06 -
Reduce heat to low, stir in heavy cream, and simmer for 3 to 4 minutes until slightly thickened.
07 -
Gradually add Gruyere cheese, stirring until melted and fully integrated. Season with salt and freshly ground black pepper to taste.
08 -
Toss cooked pasta with the sauce in the skillet, adding reserved pasta water incrementally to reach desired consistency.
09 -
Optionally sprinkle with chopped parsley and serve immediately.